Ventilating device.



F- P. MIEs,

VENTILATING DEVICE.

APPLICATION FILED Nov..1o, 1910.

Patented Sept. 17, 1912.

F. P.l MIES.

VENTILATING DEVICE.

APPLIOATION FILED Nov. 1o, 1910.'

Patented Sept. 17, 1912.

1mmmmlmw l mi@ @Mt/ZZ@ N @www F. P. MIES.

VENTILATING DEVICE.

APPLICATION FILED NOV. 10, 1910.

l 1,038,625. Patented sep1;.17,1912.

A I e SHEETS-SHEET a. a

IMU I mummm I L lll II llllll Hl P. P. MIES.

VENTILATING DEVICE. APPLIOATION FILED Nov. 1o, 1916.

Patented Sept. 17, 1912.

6 SHEETS-SHEET 4.

s o o F. P. MIES.

VBNTILA'IING DEVICE.

APPLIOATION FILED Nov. 1o', 1910.

Patented Sept. 17, 1912.

6 SHEETS-SHEET 5.

F. P. MIES.

\ VBNTILATING DEVICE.

APPLICATION FILED NOVflO, 1910.' l

1,038,625. 1 Patented Sept. 17, 1912.

6 BHBETB-SHEET 6.

FRANK MIES, 0F, CHICAGO, ILLINOIS.

'VENTILATING DEVICE.

Specification of Letters Patent.

Application led November 10, 1910. Serial No. 591,665.

Patented Sept. 17, 1912.

To all whom t may concern:

Be it known that I, FRANK P. Mms, a citizen of the United States, residing at Chicago, in the county of Cookl and State of Illinois, have invented certain new and useful Improvements in Ventilating Devices, of which the following .is a specification. Y

My inventionv relatesl to improvements in Ventilating devices, and has. for one of its objects to provide a self-contained, neat, and efficient machine adapted and arranged for portable use and especially designed for association with a window of a room or apartment.-

Other and further objects of my invention will become readily apparent to persons skilled in the art from a consideration of the specification taken in conjunction with the drawings, wherein- Figure 1 1s a broken away elevation of the device, showing its lposition on a window ledge within an apartment; Fig. 2 is a similar view, showing the interior of an apartment with the device below the window; Fig. 3 is a similar view, showin the exterior of the apartment and the out ines of the device and air conducting pipes in dotted lines; Fig. 4 isa longitudinal central section showing the parts in elevation; Fig. 5 is-a fragmentary sectional View taken online 5-5 of Fig. 4; Fig. 6 is a sectional view taken on line 6-6 of Fig. 4; Fig. 7 is a cross sectional view taken on line 7-7 of Fig. 4; Fig. 8 is a cross sectional view, taken on line 8'-8 of Fig. 5; Fig. 9 is a detail of a lioat device; Fig. 10 is a longitudinal sectional view of an electric heating device; and Fig. 11 is a diaggammat'ic view of the electric circuits of the machine;

In all of the views the same reference characters refer tovsimilar parts.

The entire apparatus 1s contained withina casing consisting of a base plate, 15, end

walls 16 and 17, side walls 18 'and 19, and a Y top wall 2.0,-the latter extending uninterraptedly to a voint 21 (Fig. 4) where it is cut away to-a mit of the introduction, from' above', of the ice chamber casing,- 22, composed of the walls 23,. 24,25, and 26, and a -removable cover-,1.l 27.l Another chamber,

bounded by walls, 2 8, 29,l and 30, contains air circulating pipes 31', 32, 33, and 34, which'lare o n tothe fan intake, humidifying cham er, 35, and at thev other end communicate with -an air'intake conduit, 36

that leads to a grating 37 (Fig. 2) placed in the outside of the wall of the apartment above the window. This pipe 36 passes through the interior of a similar pipe o1' duct, 38, which leads to the fan casing, 39,

composed of the walls 40, 41, 42, and 43, of the foul air fan 44. The discharge into the open air from fan 39 is eected through gratmg 44. In cold weather, the foul air may be taken from near the top of the Aapartment by fan 39 through pipe 38, said pipe comm icating with the apartment through th grating 38'. The heated foul air gives up some of its heat to the incoming fresh air which is taken through the smaller interior pipe 36, and is exhausted into the room or apartment by fresh air fan 45. The fresh air is heated in chamber 46 of said fan 45, inclosed by the walls, 47, 48, and 48, and is delivered through the grated opening 49. When desired, the damper 50.

may be closed to 'shut off the fresh air inlet 49, and the fresh warmed or cooled air may be delivered through the pipe 50, and conveyed to a distant point, where it may be ut-ilizedby an invalid or used for other desirable purposes.

A motor 51,preferably electrically driven, is located in a chamber 52, upon the foundation block 54 and upon the ends of the projecting shaft 55, are secured the fans 44 and 45 respectively.

To cool the incoming air an icechamber 22 is provided to contain ice as shown, the wall 24 whereof is perforated to permit the drippings from the ice to flow over the exterior surfaces of the air intake pipes 31, 32, 33, and 34, and thereby cool the incoming air. 'The Water is caught in the lower chamber 56, and is subsequently used to humidify the air, and to catch particles of material held in mechanical suspension, as in chambers 35 and 46. The incoming air may be humidi- -ed and purified by the water 57 contained in the bottom of the casings, 35 and 46, the

uniform level being maintained by a float 58, controlling a valve 59, connected with a. p'pe'GO, communicating with chamber 56; A spring 61 may or may not be employed to assist the buoyancy of thelloat in the opera# tion ofthe closing ofthe valve. A n orifice 62y permits the waterjto How from chamber 35 to the fan chamber 46. If the water, 57,:

be' l 1eate.d,and'y thereby vaporized, it will be more readily "taken up by the air assing .through the chambers,.36 and 46, an hence the humiditying effect produced upon the incoming air will be greatly increased. To this end, I rovide an electric heater, and submerge it 1n the water. In the exemplification, I have shown two such heaters, 63, and 64, of which any convenient number may be used. Specifically, the heater consists of a wire, 65, wound around a hollow tube, 66, insulated as at 67, and forced into lo a metallic attaching tube, 68, provided with a screw-threaded end 69, by means of which the device may be conveniently attached -to a suitable fixture within the humidifying or fan casing. Two terminals, 70 and 71, are

provided, the former, for convenience, being electrically connected to the metallic tube, 68. Another electrical heating device, 72, is employed for heating the incoming air. It

is so arranged that it heats the air immediately before it becomes humiditied. In the exemplications, it is shown (Fig. 7) to be an arch-shaped frame, 73, of insulating and relatively refractory material, secured to the curved wall of thecasing of fan 45, by means otbolts and nuts 74. The fan blades press the incoming air into contact with the heater before it is swept downwardly into contact with water contained in the casing, and the vapor rising therefrom is absorbed by the heated air which iinally .presses out of the opening, 75, and the openlng 49 into the room. The casing of fan, 45, may be divided at 76 by removal of bolts, 77, in which event tlg) heater may be bodily're- 5 moved with ne upper half.

To empty the water from the chambers 46 and 35, I provide a valve plug, 78, operated from above by meansof a stem, 79, so

that when the water accumulates faster thanl 40 Vthe air takesit up, the surplus may be conveniently disposed of in this manner.

In the diagram, Fig. 11, a switch 80 is provided with two independently rotatable contact blades or arms, 8l .and '82. Three coacting segments, 83, 84, 85, are arranged near the outside periphery of the switch block, 86.

Another segment, 87, is adapted for connection with arm 82 only. The electric mains are indicated by 88 and 89.r In the positions shown, the circuit is complete, as indicated by the arrows, from 88 to the rheostat 90, by wire 91 to arm 81, segment 83, by wire 70 to the water-heater 68, thence by wire- 92 to segment 84 and switch arm 82 to main 89; thus the current passes through the water heater only and the strength of thecurrent may be adjusted by the rheostat 90. If the switch arm l82 be moved to contact 85, the current will pass lthrough both heaters, the 6o water heater and the air heater, in series. If the arm 81 be now moved to segment 84, the current will pass through the air heater only, `all of which is clearly apparent. Branching at points 94 and 95 is the motor circuit including wires 96, and 97, thefmotor 51, and the rheostat, or starting box 98. By this arrangement, the heating devices may be operated independently and under per-` fect control.

l/Vhen desired the ice within the containing receptacle 22 may be removed and the air may be heated by the air heating device,

72, instead of being cooled by the ice within the chamber 22.

My invention is especially well adapted for hospital use in cases where it is desirable constantly to maintain a chamber at a given temperature and with air in which the humidity is readily controllable and where frequent ch'ange of air is necessary. 80

Having thus described my invention, what Iclaim 1s:V

1. In a Ventilating device, the combination of a fan, a fan casing containing in its bottom under the fan a liquid reservoir, a source of liquid supply, means for automatically maintaining the liquid at a predetermined height therein 'relatively close to the tips of the fan, and an electric heater adapted-and arranged to be submerged in said liquid.

2. In a, Ventilating device the combination of a fan, a fan casing providing an approximately circular path for air adjacent the tips of the fan, said casing containing in its bottom a liquid reservoir, an elect-ric heater adapted and arranged to vaporize said liquid, an air heating means mounted upon'the casing in position to heat the air 1n said circular path before it ,reaches the liquid reservoir in the bottom of the casing, and means for controlling said vaporizing means.

3. In a Ventilating device, the combination of a centrifugal fan, a scroll-shaped fan casing having a tangential outlet above itsbott-om to provide directly under the fan a liquid reservoir, and, Within the clearance between said fan and casing, means for vaporizing said liquid and an independent air heating means.

4. vIn a Ventilating device, the combination ofa fan, a fan casing containing a liquid reservoir, an electrical liquid-heatlng device to vaporize said liquid submerged therein, an air heating device within said fan casing, and means for regulating the current supplied to said heating devices. v

5. In a Ventilating device, the combination of a fan, and a casing therefor, with a humidifying'casingto contain water, opening into the air inlet 'of said fan casing, an ice 120 casing, a :water receptacle therebeneath to receive drippings therefrom, a water connectionv between the water receptacle and the humidifying chamber, a Vvalve for the con nection, and a' oatdevice'in the humidify- 125 ing chamber Ato' operate'` lsaid fvalve for automatically 'maintaining the water; level therein. y f. t n

6. In a Ventilating device, the combination tof an electric motor, a fan, V`and' aeasing 13 0 therefor, the latter provided with a chamber for Water to catch dust particles Contained in the air, an electric heater to vaporize'the Water for humidifying the air, means for varying t-he temperature of said heater, and4 independent means for varying the speed of' the motor.

7. In a Ventilating device, the combination, with a receptacle for liquid, of. a centrifugal fan, a casing therefor having a tangential outlet above its bottom to provide in 8. ln a Ventilating device, the combination, with a receptacle for liquid, ofa centrifugal fan, a casing therefor having a tangential outlet above its bottom to provide in said bottom a liquid containing space, and means without said casing to control the height of liquid therein comprising a casing providing a second liquid-containing space, communicating with the liquidcontaining space in the fan casing for maintenance of equal liquid level in both spaces,l

the casing forming said second liquid-containing space constituting the inlet chamber to said fan casing, and a ioat valve in the second liquid-containing space controlling fiow of fluld into said second space from lthe liquid receptacle.

9. ln a Ventilating device, the combinav tion with a. receptacle for liquid, .of a centrifugal fan, a casing therefor having a tangential outlet above its bottom to provide in said bottom a liquid-containing space means without said casing to control the height of liquid therein com rising acasin-g providing a second liqui -containing space, communicating with the liquid-'containing spacel lin the fan casing for maintenance of equal liquid level in both s aces, the casing forming said second liqui -containing space constitutin the inlet chamber to said fan casing,4an a oat valve'4 in the second liquid containing space controlling flowof liquid into said second space from the liquid receptacle; and pipes leading through said liquid receptacle to said inlet chamber.

10. In a ventilatin device, the combination, with a receptac e for liquid, of a centrifugal fan, a casing therefor having a tangential outlet above its bottom to provide in said bottom a liquid-containing space; means without said casing to control the height of liquid therein comprising a casing providing a second liquid-containing space, communieating with the liquid-containing s ace in the fan casing for maintenance o equal liquid level in both spaces, the casing forming said second liquid-containing space constituting the inlet chamber to said fan casing, and a float valve in the second liquidcontaining space controlling How of liquid thereinto from the liquid receptacle; pipes leading through the upper portion of said liquid receptacle to said inlet chamber, and an ice chamber above said receptacle having a reticulated bottom for dripping of the melted ice over said pipes into sa1d liquid'v receptacle.

11. A device for Ventilating anapartment I having a window frame, comprisinga motor at the lower end of the frame, a drive shaft having its ends extending from vopposite sides o f the motor, a fan upon each end of the shaft, a casing for each fan, and piping connections leading respectively from I the outer atmosphere at a point above the win-` dow frame downwardly `to one of the Afan casings and from said casing to the interior of the apartment, and leading from the interior of the apartment at a relatively high point'on the frame downwardly'around-the4 downwardl .leading pipe of theiirstfan to' i the other fam-and from the-latterto the eX- V` -In testimony whereof I hereunto set my` of two witnesses.

FRANK P. Mins;l

4hand in the presence 

